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🏑🏑🏑 A platform for buying, selling, and trading tokenized real estate assets on EVM networks, with AI to analyze market trends and suggest investments.

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FarSquare: Tokenized Property Trading Platform

evm-farsquare

A comprehensive platform for buying, selling, and trading tokenized real estate assets on EVM networks, enhanced with AI-driven market intelligence and compliance frameworks. Built using principles for robust, scalable architecture.

Overview

FarSquare implements a holistic ecosystem for Real World Asset (RWA) tokenization, combining:

  • Permissioned Token Standards: ERC-3643 compliant tokens with built-in compliance
  • Hybrid Trading Engine: Off-chain order matching with on-chain atomic settlement
  • AI-Powered Intelligence: Market trend analysis, investment recommendations, and risk scoring
  • Regulatory Compliance: KYC/AML integration with auditable on-chain attestations
  • Fractional Ownership: Property tokenization with automated income distribution

Video Demo

Core Features

πŸ›οΈ Permissioned Token Standard (ERC-3643)

Implement on-chain permission flags and transfer hooks for verified principals only, mirroring ERC-3643/T-REX standards used widely for RWAs.

🏠 Fractionalization + Income Distribution

Mint fractional tokens per property with automated payout scheduling for rental revenue through on-chain payouts or batched fiat settlement.

βš–οΈ Hybrid Marketplace

Off-chain order matching for optimal UX combined with atomic on-chain settlement for security and finality.

πŸ’§ Liquidity Pools (Optional)

Pool fractions and mint LP tokens to enhance secondary market liquidity, inspired by Centrifuge/Tinlake models.

πŸ”’ KYC/Compliance Gateway

Off-chain PII storage with on-chain attestations and signed snapshots for auditors, maintaining privacy while ensuring regulatory compliance.

πŸ€– AI Investment Intelligence

Index on-chain events and off-chain property data to train models for time-series forecasting, risk scoring, anomaly detection, and portfolio optimization.

πŸ–ΌοΈ Embeddable White-Label Widgets

Enable broker/partner sites to embed property cards and investment widgets for seamless integration.

πŸ—³οΈ Governance Module

Snapshot voting for property-level decisions (sales, repairs, budget approvals) recorded on-chain.

Architecture Overview

Systems Thinking Level 2 Framework

We approach the platform as an interconnected network of components with emergent properties:

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚   AI Analytics  │◄──►│  Trading Engine │◄──►│  Token Layer    β”‚
β”‚   (Intelligence)β”‚    β”‚  (Settlement)   β”‚    β”‚  (Ownership)    β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜
         β–²                       β–²                       β–²
         β”‚                       β”‚                       β”‚
         β–Ό                       β–Ό                       β–Ό
β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚   Data Oracles  β”‚    β”‚  Compliance     β”‚    β”‚   Governance    β”‚
β”‚   (External)    β”‚    β”‚   Engine        β”‚    β”‚   (Community)   β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜

Positive Feedback Loops:

  • AI insights β†’ Better trading decisions β†’ Enhanced liquidity β†’ Improved AI training data

Balancing Feedback Loops:

  • Compliance validation β†’ Risk mitigation β†’ Sustained trust β†’ Regulatory adherence

ERC-3643 Integration

Leveraging the T-REX (Token for Regulated EXchanges) standard for permissioned tokens:

Key Benefits:

  • $28B+ in tokenized assets already deployed using ERC-3643
  • Native regulatory compliance (SEC/EU MiCA compatible)
  • Reduced settlement times from weeks to minutes

Technical Stack

Blockchain Infrastructure

  • Base Sepolia: Primary deployment network, low fees
  • Ethereum Sepolia: Secondary deployment network
  • Optimism Sepolia: Secondary deployment network
  • EVM Compatibility: Full Ethereum Virtual Machine support for seamless integration

Core Components

  • Contracts: Solidity smart contracts with ERC-3643 compliance registry and periphery adapters
  • Backend: APIs, off-chain orderbook matching, and automated keepers
  • Infrastructure: Envio for high-performance indexing (HyperIndex) and ultra-fast data APIs (HyperSync)
  • AI Subsystem: Data ingestion pipelines with machine learning models for forecasting and recommendations
  • Frontend: React dApp with embeddable widgets and real-time market data

Development & Testing Tools

  • Hardhat 3: Advanced development environment with Solidity tests, Rust performance components, and multichain support
  • Stablecoin Integration: PayPal PYUSD for fiat-backed stable value transactions

Payment & Settlement

  • Multi-Currency Support: Native ETH, PYUSD, OP and cross-chain asset settlements
  • Automated Transactions: Enables trustless, user-controlled automation

Development Approach

Test-Driven Development (TDD)

Following strict TDD principles:

  1. Red: Write failing tests for desired behavior
  2. Green: Implement minimal code to pass tests
  3. Refactor: Improve design while maintaining test coverage

Test Categories:

  • Unit tests for smart contract functions
  • Integration tests for cross-component interactions
  • End-to-end tests for complete user workflows
  • Property-based tests for edge cases and invariants

System Thinking Level 2

  • Holistic Analysis: Consider interconnections between all components
  • Emergent Behavior: Design for network effects and feedback loops
  • Resilience: Build balancing mechanisms for system stability
  • Scalability: Plan for growth and increased complexity

Deployment Strategy

Primary Network: Base

Base serves as our initial deployment target, providing high performance characteristics for tokenized real estate trading:

  • 10,000+ TPS: Enables high-frequency trading and real-time settlement
  • 3-Second Finality: Critical for atomic transaction guarantees in hybrid marketplace
  • USD-Priced Fees: Predictable costs for automated systems and AI agents
  • aBFT Security: Highest grade security for financial applications
  • Council Governance: Transparent, institutional-grade decision-making

Why Base First:

  • Superior performance for AI-driven trading algorithms
  • Lower operational costs for high-volume applications
  • Enhanced security for regulatory compliance features
  • Familiar EVM environment for rapid development

Secondary Networks

  • Ethereum Sepolia: Maximum security and established liquidity for production
  • Optimism Sepolia: Cost-efficient scaling for high-volume operations
  • Development: Ethereum Sepolia, Base Sepolia and Optimism Sepolia for comprehensive testing

Multi-Chain Integration

  • Off-chain Execution: Real-time trading across multiple networks
  • On-chain Settlement: Final settlement on Base for guaranteed finality
  • Chain Agnostic: Seamless integration with any EVM-compatible chain

Getting Started

Prerequisites

  • Node.js 20+: For JavaScript/TypeScript development
  • Hardhat 3: Advanced development environment for Solidity testing and deployment with multichain support
  • Python 3.9+: For AI/ML components and data processing
  • EVM networks wallets: For mainnet/testnet deployment

Installation

# Clone and setup
git clone <repository-url>
cd evm-farsquare
npm install

# Install Hardhat 3 (enhanced development environment)
npm install --save-dev hardhat

# Install Foundry (for Hedera-optimized development)
curl -L https://foundry.paradigm.xyz | bash
foundryup

# Setup Envio for high-performance indexing
npx envio init

# Setup environment
cp .env.example .env
# Configure BASE_SEPOLIA_RPC_URL, BASE_SEPOLIA_PRIVATE_KEY, and other variables

Development Workflow

# Run comprehensive tests (TDD approach)
bun test

# Deploy to Base Sepolia (primary development target)
bunx hardhat deploy --network base-sepolia

# Use Envio for real-time indexing
cd infra
bun run dev

# Start local development environment
bun run dev

Compliance & Security

  • Audits: All smart contracts require third-party security audits
  • Legal Review: Compliance with relevant securities regulations
  • Timelocks: Multi-sig governance for critical operations
  • Emergency Pauses: Circuit breakers for rapid response to issues

Research & References

This platform builds upon extensive research into:

  • ERC-3643/T-REX standards for permissioned tokens
  • Real-world RWA tokenization platforms (RealT, Blocksquare, Centrifuge)
  • AI/ML integration for financial market analysis
  • Systems thinking approaches for complex platform design
  • Multi-chain networks for ERC3643 and UniswapV3 Orderbook/Marketplace contracts deployment

Key Resources:

License

MIT License - see LICENSE file for details.


Note: All components require comprehensive testing, security audits, and legal review before production deployment with real assets.

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🏑🏑🏑 A platform for buying, selling, and trading tokenized real estate assets on EVM networks, with AI to analyze market trends and suggest investments.

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